from bs4 import BeautifulSoup
import requests

headers = {
    'Users-Agent':'Mozilla/5.0 (iPhone; CPU iPhone OS 8_0 like Mac OS X) AppleWebKit/660.1.3 (KHTML, like Gecko) Version/8.0 Mobile/12A4345d Safari/600.1.4'
}

url = 'https://www.tripadvisor.cn/Attractions-g60763-Activities-oa50-New_York_City_New_York.html'

mb_data = requests.get(url, headers=headers)
soup = BeautifulSoup(mb_data.text, 'lxml')
imgs = soup.select('img[width="200"]')
for i in imgs:
    print(i.get('src'))